EP3132652A1 - Procédé et système pour une mise en oeuvre de femtocellule dans un noyau de paquet évolué - Google Patents

Procédé et système pour une mise en oeuvre de femtocellule dans un noyau de paquet évolué

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Publication number
EP3132652A1
EP3132652A1 EP15779708.5A EP15779708A EP3132652A1 EP 3132652 A1 EP3132652 A1 EP 3132652A1 EP 15779708 A EP15779708 A EP 15779708A EP 3132652 A1 EP3132652 A1 EP 3132652A1
Authority
EP
European Patent Office
Prior art keywords
mme
hybrid
data
functionality
gateway node
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP15779708.5A
Other languages
German (de)
English (en)
Other versions
EP3132652A4 (fr
Inventor
Deepak Garg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Affirmed Networks Inc
Original Assignee
Affirmed Networks Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Affirmed Networks Inc filed Critical Affirmed Networks Inc
Publication of EP3132652A1 publication Critical patent/EP3132652A1/fr
Publication of EP3132652A4 publication Critical patent/EP3132652A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/005—Moving wireless networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements

Definitions

  • the invention general relates to implementations of a femtocell in evolved packet core, and, more specifically, to improving performance and reducing latency in femtocell implementations involving the use of cellular access as a backhaul mechanism.
  • EPC Evolved Packet Core
  • LTE Long Term Evolution
  • FIG 1 illustrates an example of an Evolved Packet System (EPS) architecture 100.
  • the system architecture 100 shows a User Equipment (UE) 105 connected to the EPC over an Evolved UMTS Terrestrial Radio Access Network (E-UTRAN), which is the air interface for the LTE implementation.
  • An Evolved NodeB (eNodeB) 110 is the base station for LTE radio.
  • the EPC is composed of three network elements: the Serving Gateway (SGW) 1 15, the Packet Data Network Gateway (PDN GW or PGW) 120 and the Mobility Management Entity (MME) 125.
  • the EPC is connected to the external networks (which can include internet or IMS or private networks).
  • the MME 125 deals with the control plane. It handles the signaling related to mobility and security for E-UTRAN access, via SI -MME 130 and Sl-C 135 interfaces. The MME 125 is responsible for the tracking and the paging of UE 105 in idle-mode. It is the termination point of the Non- Access Stratum (NAS).
  • NAS Non- Access Stratum
  • the gateways, SGW 115 and PGW 120 deal with the user plane. They transport the IP data traffic between the UE 105 and the external networks, via Sl-U interfaces 140.
  • the SGW 115 is the point of interconnect between the radio-side and the EPC. As its name indicates, this gateway serves the UE 105 by routing the incoming and outgoing IP packets. It is the anchor point for the intra-LTE mobility (i.e., in case of handover between eNodeBs) and between LTE and other 3GPP accesses. It is logically connected to the other gateway, the PGW 120.
  • the PGW 120 is the point of interconnect between the EPC and the external IP networks. These networks are called PDN (Packet Data Network), hence the name of the gateway.
  • PDN Packet Data Network
  • the PGW 120 routes packets to and from the PDNs.
  • the PGW 120 also performs various functions such as IP address / IP prefix allocation or policy control and charging. Even though the 3 GPP specifies SGW 115 and PGW 120 logical element separately, in practice, they may be implemented in the same single physical entity.
  • a femtocell is a small, relatively low-power cellular base station, typically designed for use in a home or small business, and is a subset of what are known as small cell implementations. It typically connects to the service provider's network via broadband (such as DSL or cable). It typically supports two to four active mobile phones in a residential setting, and eight to 16 active mobile phones in enterprise settings. Femtocells operate on the same licensed spectrum that is used in macro and micro cells but only have a range of tens of meters, to cover the area within the home or an enterprise. A femtocell allows Mobile Network Operators (MNO) to extend service coverage indoors or at the cell edge, especially where access would otherwise be limited or unavailable.
  • MNO Mobile Network Operators
  • FIG. 2 shows an illustrative implementation of a femtocell 200.
  • a Home Node B (HNB) is a 3G femtocell.
  • a Home eNode B (HeNB) is an LTE femtocell.
  • SeGW Security Gateway
  • the SeGW 225 Since in most deployments, the HeNB 205 is providing access to the MNO via backhauling through broadband (cable/xDSL) 230, the SeGW 225 provides security to make the environment trusted.
  • the SeGW 225 may be implemented as a separate physical entity or a co-located with FemtoGW 215.
  • the interface between the HeNB 205 and the FemtoGW 215 is SI and carries SI -MME traffic for control traffic and Sl-U traffic for bearer traffic.
  • a system for a mobile wireless device to communicate with a data network via a small cell radio access network using a cellular backhaul includes a first digital communication interface for communicating with an Evolved Node B (eNodeB) element of the small cell radio access network, a second digital communication interface for communicating with a packet data network, and a hybrid gateway node communicating with the eNodeB element via the first digital communication interface and the hybrid gateway node communicating with the packet data network via the second digital interface.
  • the hybrid gateway node includes a processor and memory configured to provide a backhaul serving gateway functionality, provide a backhaul packet data network gateway functionality, provide a serving gateway functionality to the mobile device, and provide a packet data network gateway functionality to the mobile device.
  • the system includes a Mobility Management Entity (MME) in communication with the hybrid gateway node.
  • MME Mobility Management Entity
  • the MME is a hybrid MME that includes a processor and memory configured to provide a backhaul MME functionality and an MME functionality to the mobile device.
  • the processor and memory of the hybrid MME are configured to scale Stream Control Transmission Protocol associations.
  • the system also include a femto gateway node that exists outside a user equipment traffic path of the small cell radio access network while remaining in an administrative control path of the small cell radio access network.
  • a method of conveying data in a data network via a small cell radio access network using a cellular backhaul includes receiving data from an Evolved Node B (eNodeB) element of the small cell radio access network at a hybrid gateway node. The method also includes processing the data by the hybrid gateway node in accordance with a backhaul serving gateway functionality, processing the data by the hybrid gateway node in accordance with a backhaul packet data network gateway
  • processing the data by the hybrid gateway node in accordance with a serving gateway functionality for a mobile device communicating with the eNodeB processing the data by the hybrid gateway node in accordance with a packet data network gateway functionality for the mobile device communicating with the eNodeB, and transmitting the processed data to a packet data network.
  • a method of conveying data in a data network via a small cell radio access network using a cellular backhaul includes receiving data from a packet data network. The method also includes processing the data by the hybrid gateway node in accordance with a packet data network gateway functionality for a mobile device in communication with an Evolved Node B (eNodeB) element of the small cell radio access network, processing the data by the hybrid gateway node in accordance with a serving gateway functionality for the mobile device in communication with the eNodeB element of the small cell radio access network, processing the data by the hybrid gateway node in accordance with a backhaul packet data network gateway functionality, processing the data by the hybrid gateway node in accordance with a backhaul serving gateway functionality, and transmitting the processed data to the eNodeB element of the small cell radio access network at a hybrid gateway node.
  • eNodeB Evolved Node B
  • the method includes exchanging control data between the hybrid gateway node and a Mobility Management Entity (MME) node.
  • MME Mobility Management Entity
  • the MME is a hybrid MME, in which the hybrid MME processes the control data in accordance with a backhaul MME functionality and processes the control data in accordance with a MME functionality for the mobile device communicating with the eNodeB.
  • the hybrid MME scales Stream Control Transmission Protocol associations.
  • the method includes routing administrative control traffic to a femto gateway node for processing while bypassing the femto gateway node with user equipment traffic.
  • FIG. 1 illustrates an example of an Evolved Packet System (EPS) architecture.
  • EPS Evolved Packet System
  • Figure 2 shows an illustrative implementation of a femtocell.
  • Figure 3 illustrates a femtocell with cellular backhaul deployment according to an aspect of the invention.
  • Figure 4 shows the cellular backhaul integrated into the femtocell implementation according to an aspect of the invention.
  • Figure 5 illustrates an improved femtocell implementation using a cellular backhaul according to an aspect of the invention.
  • Figure 6 illustrates a further improved femtocell implementation using a cellular backhaul according to an aspect of the invention.
  • Figure 7 shows a further embodiment of an improved femtocell implementation using a cellular backhaul according to an aspect of the invention.
  • Figure 8 illustrates a further improved femtocell implementation using a cellular backhaul according to an aspect of the invention.
  • Preferred embodiments of the present invention provide architectures for improved small cell (herein called "femtocell") implementations that use a cellular backhaul rather than traditional fixed broadband backhaul.
  • Illustrative implementations of the invention have improved packet latency and increased packet core capacity relative to known cellular backhaul implementations.
  • Situations in which the use of a cellular backhaul rather than a fixed broadband (xDSL, cable) backhaul is more desirable include (1) those times when placement of HeNB result in variations in coverage and capacity increases of femtocells, such as outside of a home or other structure, and (2) use of a femtocell in a mobile environment where fixed broadband coverage is not available (e.g., taxi, bus, or other public / mass transit).
  • FIG. 3 illustrates a femtocell with cellular backhaul deployment 300 with an HeNB 305 connected to an SeGW / FemtoGW 310 through cellular access 315.
  • the fixed broadband backhaul 320 between the HeNB 305 and SeGW / FemtoGW 310 is replaced by a cellular access 315.
  • the HeNB 305 will also act as a LTE-UE ("UE-f will be used to represented the entity acting as UE in the femtocell), which is used to route packets from UEs 325 (connected to HeNB 305 represented as "UE-c").
  • UE-f LTE-UE
  • the HeNB 305 can act as a Wifi-AP (integrated within HeNB 305) and allow devices attached to the Wifi-AP to be connected to a PDN network 330. In such a case, the same general connectivity and routing concepts apply.
  • Figure 4 shows the cellular backhaul integrated into the femtocell implementation 400.
  • the HeNB 405 also acts as a LTE-UE and is represented by UE-f. All communication between the HeNB 405 and the SeGW / FemtoGW 410 goes through this cellular backhaul, which is represented by represented by eNB(i) 415, MME(j) 420, SGW(k) 425 and PGW(l) 430.
  • the eNB (i) 415, MME 0 ' ) 420, SGW(k) 425 and PGW(l) 430 have the state context for subscriber UE-f.
  • the MME (e) 440, SGW(f) 445, PGW(g) 450, HeNB(b) 405, SeGW(c) / FemtoGW(d) 410 have state context for subscriber UE-c.
  • the packet core processing has to first go through eNB j) 415, MME j) 420, SGW(k) 425 and PGW(l) 430 to reach the SeGW(c) / FemtoGW(d) 410, and then again through SeGW(c) / FemtoGW(d) 410, SGW(f) 445 and PGW(g) 450 to reach the desired PDN network 455.
  • the MME(j) 420 is the same entity as MME(e) 440
  • the SGW (k) 425 is same entity as SGW (f) 445
  • PGW (1) 430 is same entity as PGW(g) 450.
  • the packets (and especially the data plane packets of UE-c) are traversing the packet core elements (SGW represented by SGW (k) and SGW (f) and PGW represented by PGWO ' ) and PGW(g) twice.
  • Figure 5 illustrates an improved femtocell implementation using a cellular backhaul 500.
  • no changes are needed on the FemtoGW or MME entities, and changes on the core packet elements, SGWs and PGWs, are minimized.
  • the SeGW shown in Figure 4 is eliminated.
  • the role of the SeGW is to make the
  • HeNB 505 and FemtoGW 510 secure.
  • the entire HeNB traffic (for all UEs connected to HeNB 505) is going over the data plane of UE-f, which by definition is secure.
  • the IPSec tunnels between HeNB 505 and FemtoGW 510 are disabled as represented in Figure 5.
  • FIG. 6 illustrates a further improved femtocell implementation using a cellular backhaul 600.
  • the HeNB communication to the FemtoGW can be for control, management and data purposes.
  • the FemtoGW acts as a concentrator for HeNBs for both control traffic (SI -MME, shown in dashed lines) and UE traffic (Sl-U, shown in solid lines).
  • SI -MME traffic is Stream Control Transmission Protocol (SCTP) based
  • Sl-U traffic is User Datagram Protocol (UDP) based.
  • SCTP Stream Control Transmission Protocol
  • UDP User Datagram Protocol
  • the UE traffic bypasses the FemtoGW 605 and instead passes to the SGW 610.
  • the SGW 610 can home all or a subset of HeNBs 615.
  • additional enhancements are made in the SGW 610 to increase the UDP/IP context as well as scaling of GPRS Tunneling Protocol user data (GTP-U) echo messages to enable an increase in the number of HeNB homed.
  • GTP-U GPRS Tunneling Protocol user data
  • the FemtoGW 605 can be removed from the control path in certain implementations by enabling the MME 620 to scale SCTP associations. However, certain embodiments retain the FemtoGW 605 in the administrative path if the FemtoGW 605 has proprietary mechanisms to communicate with HeNBs to control the administration and installation of those HeNBs. To be clear, implementations with and without the
  • FemtoGW in the control path are within the scope of the invention.
  • FIG. 7 shows a further embodiment of an improved femtocell implementation using a cellular backhaul 700.
  • a new SGW(k', f) 705 performs all of the packet processing on uplink data traffic from UE 710 that would otherwise be performed in separate SGW(k) 630, PGW(l) 625, and SGW(f) 610 of Figure 6.
  • a new PGW(1 ⁇ g) 715 performs all of the packet processing on downlink data traffic to UE-c 710 that would otherwise be performed in separate PGW(g) 635, SGW(f) 610, and PGW(l) 625 of Figure 6.
  • a separate SGW(k) 630 can be maintained apart from the aggregated PGW(l) 625 and SGW(f) 610.
  • Implementations of the design above can optionally include an MME j, e) 745 that performs the functionality of MME(e) 620 and MME(j) 640 of Figure 6.
  • Implementations of the design above are accomplished by exchanging proprietary IE exchanges/extensions on GTP-C between the SGW and PGW entities, consulting the GTP- echo tables in SAE-GW (for both the SGW and the PGW operations) and setting appropriate data structures and tables to make such processing possible on the PGW.
  • SGW(k', f) 705 and PGW(1', g) 715 are shown as two instances in Figure 7 for clarity, from the data plane perspective, the entire packet processing is optimized and occurs at only one instance 720 whenever any of SGW (k ⁇ f) or PGW (1', g) are involved.
  • HeNB 725 is mainly dedicated to serving femto traffic for, e.g., LTE UEs (UE-f) and is capable of supporting 1 unique Access Point Name (APN) ⁇ e.g., apn-relay) for it to signify to the core network that this traffic stream is for an LTE relay function. Additional APNs can be available if the HeNB 725 was to also act as Customer Premise Equipment (CPE) for browse traffic. All traffic originating from HeNB 725 (including management traffic and control traffic) or traffic for UEs 710 connected to HeNB 725 over the cellular backhaul will use the unique relay APN.
  • APN Access Point Name
  • CPE Customer Premise Equipment
  • GRE Generic Routing Encapsulation
  • uplink traffic ⁇ e.g., signaling, management, and/or data) through the HeNB 725 is used to map the Femto-UE 710 IP address to the femto network via the HeNB 725.
  • the uplink packet processing path on SGW(k) (as part of 705) can proceed in the typical manner.
  • the network entities are aware if PGW(l) (as part of 715) is in the same cluster at SGW(k) (as part of 705), the packet processing of PGW(l) (as part of 715) will occur immediately when able.
  • FIG. 7 Further optional enhancements can be made in embodiments of implementation 700 by optimizing the uplink packet processing path on PGW(l) (as part of 715) as follows. First, the GTP header of an incoming packet is unpacked. Packets arriving at a non-apn-relay APN are processed in the typical fashion. In contrast, packets arriving at an apn-relay APN have their IP header stripped, and the source IP address (this is UE-f) is saved. If the inner packet is a non-GTP-U packet, then the packet is forwarded in the typical fashion. For example, the packet could be SCTP or administrative traffic from the HeNB to be forwarded to a
  • the FemtoGW if present, or directly to an MME.
  • a packet is forwarded normally.
  • the source IP address is checked to confirm that the address is a valid GTP-U peer for the SGW (e.g., SGW(f)), and if so, the UE-f IP address is updated to HeNB mapping, and the Tunnel Endpoint Identifier (TEID) is validated.
  • SGW(f) the SGW
  • TEID Tunnel Endpoint Identifier
  • typical SGW packet processing takes place as would have taken place on SGW(f) 610 of Figure 6, and the packet is forwarded to the internal instance of PGW(g) (as part of 715) for typical processing as defined by standards.
  • the source IP address is checked to confirm it is a valid allocated PDN session.
  • implementation 700 by optimizing the downlink packet processing path on PGW(g) (as part of 715) as follows.
  • a packet arriving on il4 730 or i8 735 will be an IP packet, which if being served by HeNB(b) 725, needs to be encapsulated with a GTP header twice as it traverses il5 740.
  • Such an IP packet will provide appropriate service treatment (e.g., QoS, charging, etc.) and PGW(g) will encapsulate the incoming packet with a GTP-U header.
  • the GTP-U packet credentials will be checked to confirm GTP-U validation on SGW(f) (as part of 705) with the HeNB(b) 725 as its GTP-peer.
  • the GTP-U header will then be transformed with an updated GTP-U header to be processed.
  • the SGW(f) (as part of 705) checks that the destination IP address in the GTP-U packet is a valid GTP-peer. For example, to confirm the HeNB 725 is a peer with SGW(f) (as part of 705), the SGW(f) (as part of 705) checks if there is a UE-f associated with the GTP-peer. If so, a null key GRE header with the UE-f IP address set as the destination address and a source address set from the GTP header is provided and the packet is forwarded to PGW(l) (as part of 715) for typical processing. Packet processing at SGW(k) (as part of 705) is also typical packet processing.
  • illustrative implementation 700 includes one or more of nodes 705, 715, and/or 720 that behave as hybrid gateway nodes by performing the functions and processing of one or more of a PGW and/or SGW.
  • the PGW and/or SGW functionality performed by a hybrid node can be that of (i) the PGW and/or SGW that would otherwise be included in the cellular backhaul (i.e., where the PGW and SGW functionality is provided for the femtocell acting as the UE) and/or (ii) the PGW and/or SGW outside of the backhaul portion of the architecture (i.e., where the PGW and SGW
  • nodes communicate with other system and network elements, e.g., eNodeBs, packet data network servers, etc. via digital communication interfaces.
  • eNodeBs eNodeBs
  • packet data network servers e.g., packet data network servers
  • digital communication interfaces e.g., Ethernet, Wi-Fi, etc.
  • known network interface hardware is used to interconnect the required elements.
  • FIG. 8 illustrates a further improved femtocell implementation using a cellular backhaul 800.
  • the SGWs and PGWs (including multiple instances of these entities) interact using the standard signaling messages as defined by 3GPP over SI 1/S5-S8 interfaces. In other words, there is no modification to any messages when SGW and/or PGW interact either in the control path or data path.
  • implementation 800 when the SGW(k) 805 and/or SGW(f) 810 interact with PGW(l) 815 and/or PGW(g) 820 over the control path, additional information elements are exchanged to transfer knowledge about the state of a given subscriber. This information exchange facilitates maintenance of various tables to optimize the packet processing to avoid the multiple hop problem as well as reducing the overall latency in the user path.
  • the UE-f context may be hosted on a separate SAE-GW than the UE-c context.
  • SGW(k) 805 and PGW(l) 815 may be on a separate SAE-GW than SGW(f) 810 and PGW(g) 820.
  • the above embodiments can be further enhanced to reduce the negative impacts of the double hop problem by migrating the sessions from SGW(f) 810 and PGW(g) 820 to PGW(l) 815 for the duration of UE 825 connectivity to HeNB 830.
  • PGW(g) 820 and PGW(l) 815 have equivalent network reachability (i.e., the same outside connection) for both S5/S8 interfaces, Authentication, Authorization, and Accounting (AAA) messaging, and SGi side interface. Also, there is a special AN-GTP connectivity between the various SAE-GW elements to exchange various GTP -variant messages.
  • This optional aspect enables knowledge of all HeNB entities and UE-f context knowledge at all SAE-GWs though the special AN-GTP interface such that all SGWs and PGWs have knowledge of each other with respect to reachability information.
  • the special AN-GTP interface there are at least two kinds of information exchanges: (1) link information exchange, which advertises the GTP-peering information across all SAE-GWs in the operator network and (2) subscriber information exchange, which advertises subscriber information to help facilitate session transfer to avoid the double hop problem.
  • embodiments of the invention include an implementation of a femtocell (e.g., a 3G or LTE femtocell) with cellular backhaul in which the SeGW node typically present in a prior art femtocell implementation is removed.
  • a femtocell e.g., a 3G or LTE femtocell
  • the SeGW node typically present in a prior art femtocell implementation is removed.
  • Embodiments of the invention also include implementations in which the FemtoGW normally present in a prior art femtocell is removed from the UE traffic path. Further still, embodiments include implementations in which the SGW and/or the PGW nodes present in the backhaul of a prior art femtocell is eliminated and the functionality of the eliminated nodes are performed by the SGW and/or PGW existing outside the backhaul.
  • the techniques and systems disclosed herein may be implemented as a computer program product for use with a computer system or computerized electronic device.
  • Such implementations may include a series of computer instructions, or logic, fixed either on a tangible medium, such as a computer readable medium (e.g., a diskette, CD-ROM, ROM, flash memory or other memory or fixed disk) or transmittable to a computer system or a device, via a modem or other interface device, such as a communications adapter connected to a network over a medium.
  • a computer readable medium e.g., a diskette, CD-ROM, ROM, flash memory or other memory or fixed disk
  • modem or other interface device such as a communications adapter connected to a network over a medium.
  • the medium may be either a tangible medium (e.g., optical or analog
  • the series of computer instructions embodies at least part of the functionality described herein with respect to the system. Those skilled in the art should appreciate that such computer instructions can be written in a number of programming languages for use with many computer architectures or operating systems.
  • Such instructions may be stored in any tangible memory device, such as semiconductor, magnetic, optical or other memory devices, and may be transmitted using any communications technology, such as optical, infrared, microwave, or other transmission technologies.
  • Such a computer program product may be distributed as a removable medium with accompanying printed or electronic documentation (e.g., shrink wrapped software), preloaded with a computer system (e.g., on system ROM or fixed disk), or distributed from a server or electronic bulletin board over the network (e.g., the Internet or World Wide Web).
  • a computer system e.g., on system ROM or fixed disk
  • a server or electronic bulletin board over the network (e.g., the Internet or World Wide Web).
  • some embodiments of the invention may be implemented as a combination of both software (e.g., a computer program product) and hardware. Still other embodiments of the invention are implemented as entirely hardware, or entirely software (e.g., a computer program product).
  • the techniques and systems disclosed herein can be used with a variety of mobile devices.
  • mobile telephones, smart phones, personal digital assistants, and/or mobile computing devices capable of receiving the signals discussed herein can be used in implementations of the invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un système pour une mise en œuvre de femtocellule dans un noyau de paquet évolué. Un système pour qu'un dispositif sans fil mobile communique avec un réseau de données par l'intermédiaire d'un réseau d'accès radio de petite cellule à l'aide d'une liaison terrestre cellulaire comprend un nœud de passerelle hybride communiquant avec un élément de nœud B évolué par l'intermédiaire d'une première interface de communication numérique et le nœud de passerelle hybride communiquant avec un réseau de données de paquet par l'intermédiaire d'une seconde interface numérique. Le nœud de passerelle hybride comprend un processeur et une mémoire configurés pour fournir une fonctionnalité de passerelle de desserte de liaison terrestre, une fonctionnalité de passerelle de réseau de données de paquet de liaison terrestre, une fonctionnalité de passerelle de desserte au dispositif mobile, et une fonctionnalité de passerelle de réseau de données de paquet au dispositif mobile.
EP15779708.5A 2014-04-17 2015-04-15 Procédé et système pour une mise en oeuvre de femtocellule dans un noyau de paquet évolué Withdrawn EP3132652A4 (fr)

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US201461981028P 2014-04-17 2014-04-17
US14/627,272 US11234279B2 (en) 2014-04-17 2015-02-20 Method of and system for femtocell implementation in evolved packet core
PCT/US2015/025947 WO2015160932A1 (fr) 2014-04-17 2015-04-15 Procédé et système pour une mise en œuvre de femtocellule dans un noyau de paquet évolué

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EP3132652A4 (fr) 2017-12-13
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JP2017517187A (ja) 2017-06-22
CN106538044A (zh) 2017-03-22
US11234279B2 (en) 2022-01-25
JP6626002B2 (ja) 2019-12-25
US20150304859A1 (en) 2015-10-22

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